Maciej Rozycki writes:
> On Fri, 4 Nov 2016, Guenter Roeck wrote:
>
> > > As above, unless absolutely critical to have floating point code
> > > then the vDSO should just avoid all FP related issues and build
> soft-float.
...
> > Anyway, isn't the kernel supposed to not use floating point operat
Maciej Rozycki writes:
> On Tue, 1 Nov 2016, Guenter Roeck wrote:
>
> > > > Some toolchains fail to build mips images with the following build
> error.
> > > >
> > > > arch/mips/vdso/gettimeofday.c:1:0: error: '-march=r3000' requires
> '-mfp32'
> > > >
> > > > This is seen, for example, with the
Maciej Rozycki writes:
> On Mon, 18 Apr 2016, Maciej W. Rozycki wrote:
>
> > The thing is that to match some software's (such as ours)
> > requirements an ISA override -- as a side effect -- relaxes ABI
> > restrictions on certain operations. E.g. the DLI macro and its 64-bit
> > immediate argu
Alex Smith writes:
> > +
> > + /* lapc is an alias to addiupc reg, - .
> > +*
> > +* We can't use addiupc because there is no label-label
> > +* support for the addiupc reloc
> > +*/
> > + __asm__("lapc %0, _start \n"
> > +
> >
> > 4) The voice for doing any instruction emulation in kernel - it is not a
> > MIPS business model to force customer to put details of all Coprocessor 2
> > instructions public. We provide an interface and the rest is a customer
> > business. Besides that it is really painful to make a diffe
> >> the out-of-line execution trick, but do it somewhere other than in
> >> stack memory.
> > How do you answer Andy Lutomirski's question about what happens when a
> > signal handler interrupts execution while the program counter is
> > pointing at this "out-of-line execution" trampoline? This se
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